A-1, I auditioned some AQ and Monster ICs last year--see http://www.audioasylum.com/audio/cables/messages/108269.html for details. (Also see http://www.audioasylum.com/audio/cables/messages/108165.html for more opinions on AQ ICs.)
The one characteristic of M1000i I heard was its softness--it simply reduced the amount of info coming thru. For example, a beaded cymbal didn't buzz enough, and the richness and complexity of about 2-dozen violins playing together was missing to a small extent.
Do understand that I'm no GEA, but these differences I heard repeatedly. Panther is great-sounding cable, and I expect those with better hearing than mine would be able to distinguish it from the also-fine-sounding Jaguar.
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